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docs(evreg): use base64url instead of base64 in QR code

This commit is contained in:
Maximilian Lenkeit 2021-04-07 07:57:00 +02:00
parent 38b6127cb1
commit 1a75364c67
1 changed files with 5 additions and 5 deletions
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event_registration.md
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@ -115,18 +115,18 @@ message CWALocationData {
The ID of a venue is derived as the SHA-256 hash of the concatenated byte representation of the string `CWA-GUID` and the byte representation of the Protocol Buffer message `QRCodePayload`. The `cryptographicSeed` adds sufficient entropy so that any modifications to the QR result in a unique ID.
A `QRCodePayload` is base64-encoded and included in a URL. The URL is the content of the QR code and structures as follows:
A `QRCodePayload` is base64url-encoded and included in a URL. The URL is the content of the QR code and has the following structure:
```text
https://e.coronawarn.app?v=1#<base64_encoded>
https://e.coronawarn.app?v=1#<base64url_encoded>
# example:
CWA Germany:
https://e.coronawarn.app?v=1#Y3dh...
NotifyMe CH:
https://qr.notify-me.ch?v=2#bm90aWZ5bWU=
https://qr.notify-me.ch?v=2#bm90aWZ5bWU
CLEA FR:
https://tac.gouv.fr?v=1#Y2xlYQ==
https://tac.gouv.fr?v=1#Y2xlYQ
```
### QR Code Compatibility with Other Contract Tracing Apps in Germany DRAFT
@ -142,7 +142,7 @@ Other contact tracing apps in Germany that leverage QR code for Presence Tracing
| `<URL>` | The URL associated with the respective contact tracing apps, with or without a partial path. |
| `<VENDOR_DATA>` | Any vendor-specific data such as the venue id in the vendor's system. This data may be passed to the vendor-specific app upon interaction by the user if a deeper integration is required. |
| `[VENDOR_ADDITIONAL_DATA]` | Additional vendor-specific data (optional). |
| `<ENCODED_PAYLOAD>` | A representation of the Protocol Buffer message `QRCodePayload` encoded in base64. Note that the signature must have been created by the CWA Server. |
| `<ENCODED_PAYLOAD>` | A representation of the Protocol Buffer message `QRCodePayload` encoded in base64url. |
**Note:** Any contact tracing apps that integrate with CWA must ensure that they do not process any information from the CWA part of the QR code.